(n.) Literally, a befalling; an event that takes place without one's foresight or expectation; an undesigned, sudden, and unexpected event; chance; contingency; often, an undesigned and unforeseen occurrence of an afflictive or unfortunate character; a casualty; a mishap; as, to die by an accident.
(n.) A property attached to a word, but not essential to it, as gender, number, case.
(n.) A point or mark which may be retained or omitted in a coat of arms.
(n.) A property or quality of a thing which is not essential to it, as whiteness in paper; an attribute.
(n.) A quality or attribute in distinction from the substance, as sweetness, softness.
(n.) Any accidental property, fact, or relation; an accidental or nonessential; as, beauty is an accident.
(n.) A reason or reasons offered in proof, to induce belief, or convince the mind; reasoning expressed in words; as, an argument about, concerning, or regarding a proposition, for or in favor of it, or against it.
(n.) A process of reasoning, or a controversy made up of rational proofs; argumentation; discussion; disputation.
(n.) The subject matter of a discourse, writing, or artistic representation; theme or topic; also, an abstract or summary, as of the contents of a book, chapter, poem.
(n.) Matter for question; business in hand.
(n.) The quantity on which another quantity in a table depends; as, the altitude is the argument of the refraction.
(n.) The independent variable upon whose value that of a function depends.